Commit 5601e621 authored by Fredrik Noring's avatar Fredrik Noring Committed by Aleksandar Markovic
Browse files

target/mips: Support R5900 MOVN, MOVZ and PREF instructions from MIPS IV 



The R5900 is taken to be MIPS III with certain modifications. From
MIPS IV it implements the instructions MOVN, MOVZ and PREF.

Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: default avatarFredrik Noring <noring@nocrew.org>
Signed-off-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
parent be9c42c9

target/mips/translate.c

+3 −2
Original line number Diff line number Diff line
@@ -23552,7 +23552,7 @@ static void decode_opc_special_legacy(CPUMIPSState *env, DisasContext *ctx) 
    case OPC_MOVN:         /* Conditional move */

    case OPC_MOVZ:

        check_insn(ctx, ISA_MIPS4 | ISA_MIPS32 |

                   INSN_LOONGSON2E | INSN_LOONGSON2F);

                   INSN_LOONGSON2E | INSN_LOONGSON2F | INSN_R5900);

        gen_cond_move(ctx, op1, rd, rs, rt);

        break;

    case OPC_MFHI:          /* Move from HI/LO */
@@ -26388,7 +26388,8 @@ static void decode_opc(CPUMIPSState *env, DisasContext *ctx) 
        break;

    case OPC_PREF:

        check_insn_opc_removed(ctx, ISA_MIPS32R6);

        check_insn(ctx, ISA_MIPS4 | ISA_MIPS32);

        check_insn(ctx, ISA_MIPS4 | ISA_MIPS32 |

                   INSN_R5900);

        /* Treat as NOP. */

        break;